Chapter 2: Chemistry of Life

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Across
  1. 3. chemical bond formed when two atoms share one or more pairs of electrons
  2. 5. chemical reaction that requires a new input of energy
  3. 7. a mixture of substances that is the same throughout
  4. 10. substance formed by a chemical reaction
  5. 11. the substance that is present in the greater amount and that dissolves another substance
  6. 14. substance that decreases activation energy and increases reaction rate in a chemical reaction
  7. 17. molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches
  8. 18. a solutions acidity, or hydrogen ion concentration
  9. 19. protein that catalyzes chemical reactions for organisms
  10. 21. condition in which reactants and products of a chemical reaction are formed at the same rate
  11. 25. molecule that makes up proteins
  12. 26. a compound that releases a proton when it dissolves in water
  13. 28. amount of energy needed to break a bond between two particular atoms
  14. 30. large, carbon-based molecule formed by monomers
  15. 31. two or more atoms held together by covalent bonds
  16. 33. energy input necessary to initiate a chemical reaction
  17. 35. polymer composed of amino acids linked by peptide bonds
Down
  1. 1. chemical bond formed through the electrical force between oppositely charged ions
  2. 2. the attraction among molecules of a substance
  3. 4. chemical reaction that yields a net release of energy in the form of heat
  4. 6. hydrocarbon chain often bonded to glycerol in a lipid
  5. 8. a substance that dissolves in a solvent
  6. 9. process by which substances change into different substances through the breaking and forming of chemical bonds
  7. 12. polymer of nucleotides
  8. 13. a compound that removes protons from a solution
  9. 15. a substance made of atoms of different elements
  10. 16. the attraction among molecules of different substances
  11. 20. substance that is changed by a chemical reaction
  12. 22. molecular subunit of a polymer
  13. 23. nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils
  14. 24. an atom that has gained or lost one or more electrons
  15. 27. reactant in a chemical reaction upon which an enzyme acts
  16. 29. one particular type of atom
  17. 32. attraction between a slightly positive hydrogen atom and a slightly negative atom
  18. 34. the smallest basic unit of matter